Automatic injecting syringe device



Dec. 7, 1937.

R. W. HEGE AUTOMATIC INJECTING SYRINGE DEVICE Filed March 23, 1935 Patented Dec. `7, 1937 AU'roMA'rro mJEcTiNG `snuiven DEVICE Raymond llege, Diego, Calif.

Application March 23, 1935, Serial No.12675 s claims. (ci. 12s-,215) l The invention relates to an automatic injecting syringe device.v The common hand injecting. syringe can be loaded into the device and then by -mea'ns of compressed air or suction the contents of the syringe can be expelled or an empty injecting syringe can be loaded by manipulating air valves.

The objects ofthe invention are to provide: first, a device whereby the common hypodermic injecting syringe will be converted into an automatically operating instrument; second, a device` which can be operated with one hand; third, a device which will give the operator complete and easy control of the rate of iiow of the injecting fluid from the syringe cylinder; fourth, a device adaptable to various sizes and designs of present day hypodermic injecting syringes5 .and others which maybe designed later; fifth.. a device applicable to other than'hypodermiczsyringes; sixth, a device which automatically couples with the plunger of the common hypodermic injecting syringe and automatically releases the same.

One form of the device is illustrated in the accompanying drawing in which Figure 1 is a view of the assembled instrument except for the air line. Figure 2 is a view of the interior with cover ZI open and piston I6 and shaft II `drawn in dotted line. Figures 3, 4, 5 and 6 are views of the disassembled parts. Figure 3 shows the size and shape adapter in two equal parts with screw 20 and window 28.

Figure 4 is a longitudinal sectional view of the automatic coupler.

Figure 5 is the after end view of the coupler.

Figure 6 is an enlarged longitudinal sectional view of the automatic lock 38.

Figure 1 is a longitudinal sectional view of the valve and demonstrating the direction of the air movement. 40 Figure 8 is an after end view of the assembled instrument.

Figure 9 is a common hypodermic' injecting syringe with needle which may be used in this device.

Figure 10 is a plan view of the directional valve housing.

In Figure l the assembled instrument is ready for the air hose attachment. Roughly it is a tube, the anterior 1/3 of which is occupied by the hypodermic syringe I2 and its adapter I4, the middle 1/3 by the coupler 9, and the after 1/3 by the propelling mechanism. The hinged cover 2l includes the anterior 2/5 of the tube. The air line I by pressing valve 4 admits air to valve 5V which de- 55v pending on the operators wishes can be pushed toright or left'and the air admitted to line 2 or line 3. If the air is directed into line 2 it will enter the rear cf the piston I6, Figure 2, and push ittoward the syringe I2. The air in the cylinder forward to the piston I6 will be pushed into line 3 and make its exit through an opening 23, Figure 7.

Figure 2 is a view ofv the opposite side of Figure l. Aso in Figure 2 the hinged cover 2l is open and shows a hypodermic lsyringe I2 in place about to be engaged by the coupler 9. This Figure 2 shows the size and shape adapter I4 secured in place by screws 2B. The one, one-half with window 28 allows inspection of the syringe while in operation. The brake 8 is comprised of two rectangular metal piecesan inner and an outer, held together by two screws, said pieces having the contour laterally of the door 2I on both their inner and outer surfaces. Both pieces are beveled at their inner edges to be retained in a window of the cover 2I, said window having its inner edges beveled to allow the braking surface a position above the automatic coupler 9 when cover 2l is in a closed position. The inner surface of said brake which rides upon the automatic coupler 9 is inlaid with a material possessing brake qualities. The outer surface of said metal pieces is grooved transversely to conform with the contour of the grasping fingers of the operator. This braking device allows the operator instant control over the movable coupling element and the rate of iiow from the syringe. The hasp 6 secures the cover 2I in the closed position. When the coupler 9 is forced against the plunger I3 the trip 32 is pushed back. This results in the arms I9 folding around the plunger head I3. When the cover 2I 1s in closed position the coupler 9 will be locked to the plunger head I3 until the cover 2I is lifted. This will be described under Figures e, 5, and 6.

Figure 3 shows the varied sized and shaped syringe adapter I4 disunited. It will be necessary to have each diiierent type of hypodermic in- Jecting syringe adapted to the device by means of a somewhat similar adapter. It is to be secured to the device (each half) by a screw 210 or by an embedding or other arrangement, should a special syringe cylinder and plunger be made it could be used in the instrument without this adapter.

In Figure 4, the longitudinal section view of the coupler Q, there is shown two arms I9 pivoted to the body 4l) at 33. There is a spool shaped center' part 32 or the trip, the mid portion of which is square so as to prevent its turning. The one edge of this squared portion is v notched as shown at I0.

This notch is to receive the pawl 3| of the lock 38 in Figures 5 and 6. 'Ihe body 40 has a square hole through its center through which the trip slides. A spring 34 holds the trip forward except when the plunger head I3 is being or is securely engaged. The after end 4| of the trip is gaped to admit the lever end of the arms I9. The lever end is secured by a pin to this after end of the trip, but may move outward due to the elongation of the hole in the lever end of the arm through which the pin passes when the plunger head I3 pushes the trip 32 and compresses the spring 34.

Figure 5 shows an after end view of the coupler 9. This view shows three arms I9. They may be increased or decreased in number as desired. The threaded holes are for the attachment of the shaft II, Figure 2. This view shows the coupler 9 to be round. The head of a T shaped sliding bolt 25, is shown here to be above the border of the coupler 9, as is also vshown in Figure 2. In the assembled and closed device this head 25 is buried into the lock by the cover 2| then the pawl 3| will engage the notches I0 of the trip and then only. Otherwise the plunger head I3 is free.

Figure 6, an enlarged longitudinal section view of the locking mechanism, shows it to consist of an outer tubular portion 31 with an inner annular ledge 28 nearA its middle, a T shaped sliding bolt 25 held above the annular ledge 28 by a coil spring 26, a'nd a pawl 3|, the upper end of Which is hollow and holds a coil .spring 30. 'I'he lower end of the sliding bolt 25 extends below the annular ledge 28 and is attached to the pawl 3| by a pin 29. The hole in the sliding bolt 25 is elongated vertically so as to allow the pawl 3| to ride the notches I9, Figure 4, when the device is in the act of engaging the plunger head I3. The coil spring 36 holds the pawl .3| ln readiness to engage the notches I0, Figure 1, when the head of the T shaped sliding bolt 25 is pushed downward by the closed cover 2|, Figure 1.

'I'he locking mechanism is secured to the main or body portion 40 of the coupler 9 so that when the head of T shaped sliding bolt 25 is free of pressure by the cover 2| the engaging end of the pawl 3| will be just above the notches I0, and when the head of the T shaped sliding bolt 25 is pressed dovm by the cover 2| the pawl 3| will engage notches IIJ.

In the assembled and operating instrument the plunger head I3 is coupled automatically and is held engaged until the cover 2| is opened. Then the coil spring 26, Figure 6, pulls up the pawl 3| from the notch I6, Figure 4, the coil spring 34, Figure 4, pulls the trip 32 forward, the arms I9 open and release the plunger head I3. This feature allows the operator to fill as well as empty the syringe cylinder.

Figure 7 shows one form of valve 5 that may be used in this combination. v'I'he common steam engine valve principle is employed here. Valve 4 opens when pressed downward and/closes on releasing the manual pressure. The diagram shows the valve in position to receive air from line when valve 4 is pressed and convey it to line 3 to the air cylinder at 3 in Figure 2. At the same time it is in a position to receive air through line 2 which makes its exit through 23 to the outside.

Figure 8 is an end view of the assembled in- I strument. An escape safety valve 'l controls the air pressure entering line 'I'he air pressurev may be altered by adjusting the screw 21. The brake 8 operates by means of the grip. The grip pressure is brought to bear upon the coupler 9 shown in Figures 1 and 2, thereby controlling the action of the plunger I3.

A complete operation of the instrument is as follows: A filled or empty hypodermic syringe I3 is loaded into place. The cover 2| is closed and secured by -the hasp 6. Now the valve 5 is set so as to pass the air to line 2, valve 4 is pressed, the air enters the rear of the air chamber and pushes the piston I6 forward.' The trip 32 encounters the head oi the plunger I3, the force of the impact closes the coll spring 34, spreads the lever end of the arms I9, closes the engaging end ofthe arms I 9 and engages the plunger head I3. The arms I9 are locked in this position by the pawl 3|. The'movementof the plunger I3 now is controlled by the air valve 4 which on releasing will close oi the air entering the device. Also the movement is further controlled by the brake 3. After the contents of the syringe cylinder are expelled, it can be reiilled by reversing the valve 5. 1

Should air suction be applied line instead of air -compression by operating the above mentioned valves, a similar action can be brought to bear upon the injecting syringe.

Having described the invention, I claim:

, 1. An automatic injecting syringe device comprising, a case adapted to hold a syringe with a plunger in a stationary operable position'relative to said case and further adaptable to releasing said syringe, an automatic coupling element adapted to engage, hold, and release the plunger of the said syringe, actuating means with a moveable member operable to move said coupling element back and forth whereby the plunger of the said syringe is moved to iill or empty the said syringe, releasable means comprising a member mounted with the said coupling element and release thesaid syringe the said member operates to allow the said coupling element to release the said plunger, control means comprising a manually operable element mounted on the said case and adaptable to bearing on one or more ofthe longitudinally moveable elements to control the movement of the said plunger, and operating control means mounted on the said case and adapted to start, stop, or reverse the operative force acting upon the said actuating member whereby the movement of the said actuating member is controlled.

2. An automatic injecting syringe device comprising, a case adapted to hold different sized and shaped syringes with diiierent sized and shaped plungers and adaptable to release same, an automatic coupling element adapted to engage and hold, and release the plungers ofthe said syringes, actuating meansy operable to move said coupling element back and forth whereby the said plungers are moved to fill or empty the said syringes, releasable means comprising a member mounted with said coupling element and vadapted to bear on the inner face of the said and operating control means adapted to start, stop, also reverse the operative force acting upon the said actuating means thereby controlling the movement of the longitudinally moveable members and the flow to and from the said syringes.

3. An automatic injecting syringe device comprising; a case adapted to hold a syringe with a plunger in a stationary operable position relative to the said case and adaptable to release same; an automatic coupling element operable to engage, hold, and release the plunger of said syringe comprising, a body member with a hole in its center, a center part adapted for mounting in the said hole and adapted to move back and forth therein, one or more arms mounted peripherally to said body member intermediately of their ends, the forward ends of the said arms extending forward and the rearward ends inwardly and to the rear of the said body member and engaging said center part, a pawl means mounted with said body member, said center part having a means adapted to be engaged by the said pawl means to lock the said center part thereby locking the said arms; actuating means with a moveable member operable to move the said automatic coupling element back and forth'v whereby the said plunger is moved to ll or empty the said syringe; releasable means comprising a member mounted on the said coupling element and adaptable to bearing on the inner face of the said case whereby when the said case is operated to release the said syringe the said member operates to allow the said coupling element to release the plunger of the said syringe; control means comprising a manually operable element mounted on the said case and adapted to bear on one or more of the longitudinally moveable members to control the movement of the said plunger when the said case holds the said syringe; and operating control means mounted on the said case and adapted to start, stop, also reverse the operative force acting upon the saidmoveable member of the said actuating means to control the movement of the longitudinally moveable members.

4. An automatic injecting syringe device with a holding element with an inner face said element adapted to hold a syringe with a plunger in a stationary operable position relative to said element and adaptable to releasing same, said holding element further adapted to support an actuating means with a moveable member joined to a coupling means and adaptable to moving same back and forth, said coupling means adaptable to engaging, holding, and releasing the plunger of the said syringe, said holding element furtheradaptable to a member of the said coupling means which member is adapted to bear on the inner face of the said holding element when the said holding element holds a syringe whereby when the said coupling means is moved by thegsaid actuating means to engage the plunger of the said syringe the said member of the said coupling means operates to allow the said coupling means to engage and hold the plunger of the said syringe, also when the said holding element is operated to release the said syringe the said member of the said coupling means operates to allow the said coupling means to release the plunger of the said syringe, and said holding l.

element further adapted tosupport a control means which bears on one or more of the longitudinally moveable elements adapted to the said holding element when the said holding element holds a syringe whereby the movement of the plunger of the said syringe is controlled.

5. In an automatic injecting syringe device, a holding element for a syringe with a plunger which holds it in a stationary operable position relative to the said element and operable to release the said syringe, actuating means with a moveable member supported by the said element operable to engage and move longitudinally back and forth the plunger of the said syringe held by the said holding element, means for releasing the plunger of the said syringe from the said actuating means whereby when the said holding element is operated to release the said syringe with a plunger the said means operates to allow the release of the plunger of the said syringe from the said actuating means, control means supported by the said holding element adapted to bear on one or more of the longitudinally moveable members whereby the back and forth movement of the plunger of the said syringe is controlled, and an operating control means supported by the said holding element adapted to start, stop, and reverse the operative force acting upon the said moveable member of the said actuating means whereby the back and forth movement of the longitudinally moveable elements is further controlled.

6. The combination, means for holding a syringe with a plunger in a stationary operable position relative to said means and operable to release same, actuating vmeans with a moveable member supported by the said holding means adaptable to moving back and forth longitudinally, a plunger engaging-holding means joined to the said member of the actuating means, said plunger engaging-holding means adaptable to engaging and holding the plunger of the said syringe forwardly and adapted to move back and forth longitudinally whereby when the said actuating means moves the said plunger engagingholding means forwardly the said plunger is engaged and held by the said means, means for releasing the said syringe with a plunger from the said holding means and said plunger engagingholding means comprising a member supported by the said plunger engaging-holding means bearing on the said holding means when the said syringe is held by the said holding means whereby when the said holding means is operated to release the said syringe with a plunger the said member of the said plunger engaging-holding means moves to allow the release of the plunger of the said syringe, control means supported by the said holding means bearing on one or more of the longitudinally moveable members when the said syringe is held by the said holding means, operable manually, and operating control means supported by the said holding means operable upon the operative force acting upon the said moveable member of the said actuating means.

RAYMOND W. HEGE. 

